Yarn forwarding apparatus



Feb. 27, 1945. R. D. MccRcsKY 2,370,180

YARN FORWARDING APPARATUS Filed Feb. 8, 1944 Robelj'llm-Crokkg 7ATTORNEY not the yarn.

Patented Feb. 27, 1945 YARN FORWARDING APPARAT US Robert DuncanMcOr-osky, Richmond, Va., as-

slgnor to E. L du Pont de Nemours & C

mpanr,

Wilmington, Del., a corporation of Delaware Application February 8, 1944, Serial No. 521,587

3 Claims. (Cl. 28-715) This invention-relates to yarn forwardingapparatus, and more 'particularlyit relates to an improved constructionof yarn forwarding apparatus comprising a feed wheel having peripheralyarn feeding surfaces of increasing ,diameterfrom front to rear.

Yarn forwarding apparatus comprising a socalled stepped" feed wheel,having peripheral yarn feeding surfaces of increasing diameter fromfront to rear, and a yam guide roller spaced therefrom. are c mmonlyused in the transport of yarn from a spinning bath to a'collectingdevice, for example a spinning bucket. The use of such a stepped feedwheel and spaced guide roller involves an objectionable operationaldifficulty in positioningthe yarn thereon. After the yarn has beenpassed around the peripheral yarn feeding surface of smaller diameterand about the spaced yarn guide roller, the operators hand cannot passto the yarn feeding surface of larger diameter without obstruction bythe yarn passing to the, said surface of smaller diameter. Thisnecessitates transferring the yarn from one hand to the other and aroundthe yarnpassing to the surface of smaller diameter. As the spinningspeeds are gradually increased, this ,becomes a feat which not alloperators can perform.

It is therefore an object of this invention to provide a yarn forwardingapparatus comprising a stepped feed wheel and a spaced yarn guide rollerwhich can be easily threaded with one hand.

It is another object of this invention tocon- 1 struct a yarn forwardingapparatus comprising a stepped feed wheel and a spaced yarn guide rollerwhich can be easily threaded without passing the yarn about a previouslythreaded portion Other objects of the hereinafter.

The above objects can be accomplished by invention will appear Figure 3is a top plan view of the apparatus shown in Figure 1. A

Referring to the drawing, reference numeral 8 designates a stepped feedwheel comprising a yarn feeding surface 8 of any given diameter, a

yam feeding surface in of a greater diameter than 8, and a beveledfiange I! which is adapted to remove liquid from yarn feeding surface itand throw the same, by centrifugal force, into flanged disk: H fromwhich it may be drained in any desired manner. The feed wheel 8 isdriven at any desired peripheral speedthrough shaft l'l. A yarn guideroller lt ispositioned a short distance from the feed wheel 6. The guideroller I6 is usually freely rotatable and yarn driven, and it functionsto pass yarn 22 from yarn feeding surface 8 to yarn feeding surface In.Preferably,'roller I8 is so positioned relative to the feed wheel that.the yarn passing from surface 8 first contacts flange IQ of the roller(see Figure 2). By firstcoming in contact withfiange the provision ofmeans .for passing yarn to the feeding surface of smallest diameterdefined by the peripheral surthrough the space I faces of the feed wheeland the yarn guide roller and the common tangents to these surfaces.

paratus shown in Figure 1;

yarn forwarding apparatus about roller guide l8,

l8, the yarn rolls along this flange until it contacts the yarn guidesurface of roller l8 and thereby impartsa false twist to' the yarn andmaintains the yarn filaments in a compact bundle.

Two freely rotatable, grooved yarn guide rollers l8 and 20 arepositioned to pass the yarn from its source, for example a spinningbath, to the smaller diameter yarn feeding'surface 8 through the spacedefined by the peripheral surfaces of feed wheel 8 and guide roller' l8and the common tangents to these peripheral surfaces.

Guide roller I8 will therefore be positioned at some point rearward ofyarn feeding surface It. and guide roller 20 will be positioned at somepoint within the above-defined space. By this construction of guiderollers l8, I8 and '28 and stepped feed wheel 8, the yarn can bethreaded onto the yarn forwarding apparatus with one hand in acontinuous motion in the following manner: The yam 22 .is passed fromits'source about guide roller l8, thenabout guide roller 20, then aboutyarn guiding surface 8, then then about yarn guiding surface It, andthen to its destination as shown by the arrows in Figure 2. I Forpurposes of clarity and simplicity, the illustrations and theaccompanying description are directed to a feed wheel having only twosteps, 1. e., two yarn contacting surfaces of different. diameteryand acooperating yarn "guide roller having a single yarn contacting surface.It is believed to be quite apparent from thisdescription that the feedW11 1 may have any desired.

number'of' steps and the yarn guide roller it may also be provided witha similar series of steps, or a plurality of separate, cooperating yarnguide rollers may be provided to forward the yarn between each two stepsof a multi-stepped feed wheel.

Furthermore, by the use of a feed wheel having slightly conical yarnforwarding surfaces and with the axes of the feed wheel and thecooperating yarn guide rollers slightly askew to each other, as shown inthe drawing, several wraps of the yarn can be taken about each step ofthe feed wheel and yarn guide roller.

Since it is obvious that many changes and modifications can be made inthe above-described details without departing from the nature and spiritof the invention, it is to be understood that the invention is not to belimited thereto except as set forth in the appended claims.

I claim:

1. Yarn forwarding apparatus comprising a feed wheel having peripheralyarn feeding surfaces of increasing diameter from front to rear, a yarnguide roller spaced from said feed wheel and adapted to guide the yarnfrom one-yarn feeding surface'to another yam feeding surface of greaterdiameter, and means for passing yarn to the yarn feeding surface ofsmallest diameter aerated through the space defined by the peripheralsurfaces of the wheel and roller and the common tangents to thesesurfaces.

2. Yam forwarding apparatus comprising a feed wheel having peripheralyarn feeding surfaces of increasing diameter from front to rear, a yarnguide roller spaced from said feed wheel and adapted to guide the yarnfrom one yarn feeding surface to another yarn feeding surface of greaterdiameter, and yarn guide rollers positioned for passing yam to the yarnfeeding mirface of smallest diameter through the space defined by theperipheral surfaces of the wheel and roller and the common tangents tothese surfaces.

3. Yarn forwarding apparatus comprising a feed wheel having peripheralyarn feeding surfaces of increasing diameter from front to rear.

a yarn guide roller spaced from said feed wheel and adapted to guide theyarn from one yarn feeding surface to another yarn feedingv surface ofgreater diameter, and grooved yarn guide rollers positioned for passingyarn to the yarn feeding surface of smallest diameter through the spacedefined by the peripheral surfaces of the wheel and roller and thecommon tangents to these surfaces.

. ROBERT DUNCAN

